Apparatus for charging a battery, and processes for detecting the presence of a battery connected with a battery charging system and for controlling a power control switch for a battery charging system.

摘要

"APPLIANCE FOR CHARGING A BATTERY AND PROCESSES TO DETECT THE PRESENCE OF A BATTERY CONNECTED WITH A BATTERY CHARGING SYSTEM AND TO CONTROL A POWER CONTROL CHANGER OF A BATTERY CHARGING SYSTEM". A device for charging a battery has a power supply terminal, a controllable power control switch coupled with the power supply terminal, a charging circuit having a charging terminal for connection to a battery terminal, and devices for open and close the power control switch if a battery is disconnected or connected to the charging terminal, respectively. The device for opening and closing the power control switch may include a circuit, analog, a digital circuit, a hybrid digital / analog circuit or a mechanical switch. A process of controlling a battery charging system's power control switch is presented, comprising the steps of generating a reference voltage level, detecting the voltage level at the charging terminal, comparing the voltage level at the charging terminal charge with the reference voltage, and control the power control switch in response to the comparison of the reference voltage level and the voltage level at the charging terminal.